Machine for surfacing butchers&#39; blocks.



PATENTED FEB. 12, 1907.

D. R. INGRAM. .MAGHINE FOR SURFACING BUTOHERS BLOCKS.

APPLICATION FILED JULYQ, 1906.

' 2 SHEETSSHEET 1.

PATENTED FEB. 12', 1907. I

D. R. INGRAM. MACHINE FOR SURPAOING BUTUHERS BLOCKS.

2 SiIEETS-SHEET 2.

APPLIOATIGN FILED JULY 9. 1906.

ran sra'rns arana craters.

DANA R. INGRAM, CHICAGO, ILLINOIS.

MACl-HNE FOR SURFACINGFBUTCHER8 BLOCKS ,To aZZ w'hom it may concern.-

. Butchers Blocks, ,of which thefollowing is a description, referencebeing had'tothe accompanying drawings, forming a part of thisspecification, in which corresponding letters of reference in thedifferent figures indicate like parts. The object of my invention is toprovid a simple and inexpensive machine which shall be so constructed asto enable it to be clamped to an ordinary butchers block or othersimilar article and operated in such a way as to rapidly and uniformlysurface said block, so as to leave its top smooth and level,-

all of WlllCh is hereinafter more particularly described, and definitelypointed-out in the claim. I

Inthe drawings, Figure 1 is a plan view of my improved surfacing-machineas the same would appear when clamped to a butcher s block. Fig. 2 isavertical sectional view thereof, taken upon the hne 2, Flg'. 1, viewed111 the dlrection of the arrow there shown;

and Fig. 3'is a. vertical sectional view of a' portion of said machine,taken upon the line '3, Flgs. 1 and 2, viewed in. the direction of thearrows therein shown.

Referring to the drawings, a, Figs. 1 and 2,

represents a bar preferably formed from an gle-iron, which constitutes apart of the frame, the length of said bar being somewhat greater thanthe length or width of the largest block .to which it. would beattached. Bolted or otherwise rigidly attached to the ends of said barare cast arms I) b for the purpose hereinafter stated. Projected throughthe ends of said bar a at right angles thereto .are clamping-rods c c, aconsiderable ortion of each of which is screw-threaded as shown. Thelength of said rodsis somewhat greater than the largest block with whichthey would be used. Said rods are adapted to be extended-loosely throughbores in the respective ends of the clamping-bar d, which corresponds toand is arranged parallel with the bar a. Hand-nuts 'c 6 upon the ends ofthe rods 0 enable the bars a d to be clamped rigidly against the sidesof the block f.. x

Arms 9 g, corres ending to the-arms b b,

are rigidly attache to the ends of the bar (1.

Specification of Letters Patent. Application filed m 9, 1966. Serial No.325,378.

. endwise movement.

- Patented-Feb.'12, 1907.

.journaled in'bearings in the outer ends of said arms are parallelscrew-threaded'rods 'i '11, each of whichis provided with'a collar 1'and sprocket-wheel k upon the end, A; sprocket-chain 1 serves to connectthe wheels 7c and to cause them to rotate in unison for the purposehereinafter Stated' Collarclamps mm, Fig. 1, are .also'adjustablyattached to the opposite ends of the screw-rods t i to prevent endwismovement thereof" when said rods are rotated. -I refer to connect theends of the parallel shde-rods h by means of a barn, which "is providedwith suitable fittings 0 0, bored to receive said rods and adj ustablyclamped thereto by means of set-screws p. A slide block or frame 9,having a smooth horizontal bore to receive the rod it upon the left handand a screwthread ed bore to receive the adjacent screw-rod 'i, is

mounted .upon said. rod" and screw, respectively, while a somewhatsimilar frame or block 1' is mounted in the same manner upon thecorresponding bar h and screw-rod eat the right. Theparts gmare-connected with each other by means of a transverse rod 8, rigidlyattached thereto at its e'nds,- and a screw-threaded rod 25, the latterbeing mounted in the bearings u v and provided with a collar wat one endand a crank as at the other, the hub of which forms a collar to preventThe parts q r and their intervening connections form a carriage, which Iterm the main-carriage of the machine. This maincarriage is adapted tosupport a subsidiary carriage, which in'turn is adapted to be moved uponsaid main carriage in a plane at right angles to the lane of the pathwayof the latter. Said su sidiary carriage consists of-a slidingframegenerally designated by y, the base of which is provided with abore through which the rod 8 is loosely projected and another which isscrewthreaded to receive the screw-rod .t. arm 2 is projected upwardlyand thehe'ad: thereof tap ed to receive a screw-threaded regulating-seeve' 2, through which is projected a vertical shaft 2 that portion-0fwhich is in'closed in the part 2 being of lesser diameter than thatbelow, while a ldck-nut e is secured upon the upper end, so that theturning of the screw-sleeve z may serve to raise or lower the shaft.The'enlar ed portion of the shaft is pr0vide il.,,1w itl1'adongitu' An Idinal grooves, into which is loosely projected a key 2 by which a pulleyz is connected with said shaft. Said ulley is otherwise loose upon theshaft, w ich is free to move vertically therethrough while rotatedthereby. Upon the lower end'o'f said shaft is mounteda rotary saw orcutter 2 arranged to operate in a horizontal plane, While immediatelyabove the same and attached to or formed upon the'same hub is a cuttingor chipping device a which is intended-to remove the portion partiallyseiveredby the saw.

' A driving ulley q is mounted upon a shaft'gf, whic is supported inbearings in the part {1 and is adapted to be rotated by means of thecrank 9 A pulley 'r is also mounted upon a shaft r journaled in the part1'. A

. belt Q is trained around the pulleys g, r, and

z to drive the latter.

' -Having describedthe various parts of my improved device, I will nowexplain its oper- When one. cut is made across the bloclg the ation. Theclam ing-frame is placed upon the block f, and w en the bars a d areadjusted to the roper level they'arefirmly clamped against t e sides ofthe block by means of the hand-nuts e.

v The projec'tingjend of-one or both of the screw-rods i, being squared,a

brankc'" is placed thereon and operated,

which causes both-of the screws t to rotate in the samefdnectmn. Themainv carriage 1s thereby moved upon't'he guide rods huritil it standsover the edge of the block f.

The crank 00' is the n turned so as to cause the sec- ,ondary-caIr'iageto stand over one corner of s'ald block. The cutting-tool 2 18 thenverticallyadjusted by means of the screw 2 to the exact height necessaryto make the proper cut upontheblockf The machine is then ready foroperatibn. 'Upon turning the crank'q? the cutting-tool 2 is caused torotate at a high speed. ,At the same time the crank ac isturned in adirection to move the carriage y across the block, the rate of movementcorresponding to the speed at which it is desired to advance the cutter.

machine is ten'npora'rily stopped and the screws '6 are turned'to movethe main carriage forward a su'flic ent distance to provide for a newcut. The crank is then rotated- "in the same "and the crank w in anopposite direction, thereby reversing the movement of the carriage y andcausing a new out across the block. With each complete cut the. screws'i are turned to provide for a new one,

and the carriage 1 is-thus moved back and forth until the entire blockis. surfaced. In-

asmuch. as the guide-rods h h and 8 form horizontal guides for therespective car-.

departing from the spirit of the invention involved.

, Having thus described my invention, I I

. In a device of the class described, the combination of parallelclamping-bars connected at the respective ends by means of screw vthreaded rods having clampingmuts thereon,

parallel supporting-rodsconnected with arms attached to therespectiveends of saidclamping-bars at right anglesqthereto, one, of

each pair of' said supporting-rods being screw+threaded, means forrotating one of said rods, means for conneeting'said rods to causethem'torotate in unison, frames mounted upon each of said pairsof-support- '-ing-rods, parallel rods for connecting said frames one. ofwhich is screw-threaded, a

carriage mounted upon said last-named parallel rods, a vertical shafthaving bearings in said carriage with a revoluble cutter upon its lowerend, and means for actuating said shaft as the carriage is being movedin either direc-- tion. In testimony whereof I have signed thisspecification, in the resence of two subscribing witnesses, this 2,th'day of June, 1906 'EDANA R. INGRAM.

Witnesses:

D. H. FLETCHER,

)ARRIE JORDANQ

